Epicyclic drive



Nov. 14, 1950 L. HQBROWNE 'EPICYCLIC DRIVE 5 Sheets-Sheet 1 Filed Feb.12, 1946 Llllll INVENTOR.

LINDSAY H. BROWNE JAWM Wm ATTORNEYS Nov. 14, 1950 L. H. BROWNE 2,529,996

EPICYCLIC DRIVE Filed Feb. 12, 1946 5 Sheets-Sheet 2 INVENTOR. LINDSAYH. BROWNE BY A TTORNEYS Nov. 14, 1950 H. BROWNE 2,529,996

EPICYCLIC DRIVE Filed Feb. 12, 1946 5 Sheets-Sheet 5 IN VEN TOR. LINDSAYH. BROWNE AI TORNEYS L. H. BROWNE EPICYCLIC DRIVE Nov. 14, 1950 5Sheets-Sheet 4 Filed Feb. 12, 1946 INVENTOR LINDSAY H. BROWNE Una/M, 8H

ATTORNEYS L. H. BROWN E EPICYCLIC DRIVE Nov. 14, 1950 5 Sheets-Sheet 5Filed Feb. 12, 1946 INVENTOR LINDSAY H.BROWNE JMMAMM ATTORNEYS PatentedNov. 14, 1950 EPICYCLIO DRIVE Lindsay H. Browne, Westport, Conn.,assignor to American Brake Shoe Company, a corporation of DelawareApplication February 12, 1946, Serial No. 647,078

17 Claims. 1 v This invention relates to improvements in epicyclicdrives and has for an object the provision in an epicyclic drive of adrive member carrying an outwardly facing race, a driven member havingan inwardly facing race, roller means between said races, and meansurging said roller means into rolling contact with both said races.

Another object of the invention is the provision in an epicyclic driveof a drive member carrying an outwardly facing race, a driven memberhaving an inwardly facing race, roller means between said races, afiller block disposed between said races, said filler block contactingboth said races with the exception of the area occupied by said rollermeans and clearance areas on each side thereof, and spring meanscarriedby said filler block and urging said rollermeans into rolling contactwith both said races.

Yet another object of the, invention is the provision in a drive of thecharacter described wherein frictionless bearings are provided betweensaid filler block and said inner race and between said filler block andsaid outer race.

A further object of the invention is the provision in an epicyclic driveof counter-balancing means carried on one element of said drive anddisposed substantially diametrically opposite the roller means.

Yet another object of the invention is the provision in an epicyclicdrive of means carrying inner and outer races facing each other, rollermeans contacting said races, a filler block between said races andclearing said roller means, and counter-balancing means mounted on saidfiller block and disposed substantially diametrically opposite saidroller means.

Another object of the invention is the provision in a reciprocatingdevice of an epicyclic drive which includes an inwardly facing outerrace, said outer race being formed in a block member constituting aportion of 2. scotch yoke movement.

Yet another object of the invention is the provision in a multi cylinderpump of an epicyclic drive, the oscillating member of which carries aplurality of pivoted connecting rods and at least onerigid connectingrod. I

This application is a continuation, in part, of

Application Serial Number 503,241, filed September 21, 1943, now Pat.#2,427,253, dated Sept. 9th,

Referring to the drawings, which are given by way of example toillustrate the invention:

Figure 4 is an end View of a modified form of the epicyclic drive shownin Figure 3;

Figure 5 is a sectional view taken along the line 5-5 of Figure 4;

Figure 6 is a perspective view of the filler block or camming member;

Figure '7 is a fragmentary sectional elevation, showing a modificationof the invention wherein the roller member is provided with an annularflange which engages corresponding grooves formed in the inner and outerraces; and

Figure 8 is a plan View taken along the line 8-8 of Figure '7.

Referring first to Figures 2 and 3, a casing II) has a circular sidewall II carrying a plurality of bosses I2, I3, M, and I5. Each boss hasa radial hole like the radial hole I 2a shown in Figure 3. The bosses,it will be noted, are oppositely disposed, and center lines adjoiningopposite holes cross each other along the vertical center line of thecasing. u

The casing ID has upper wall Ma preferably formed integral therewith,and carrying a boss I 5a. The boss I5a has a central bore I6 into whichthe outer race of'a ball bearing I1, is pressed. The bearing is retainedin the bore I6 by means of a spring ring I8, the outer periphery ofwhich engages a groove formed in the bore I6. The casing I0 also has anupwardly extending stepped rim I9, the purpose of which will bepresently described. The casing II] carries on its bottom end anoutwardly extending radial flange 20 which is stepped at 2|.

Secured to the bottom of the casing I0 is a bottom end plate 22 whichcarries a bead 23 which cooperates with the step 2|, and a flangeportion 24 which contacts the annular flange 20 on the casing I0.

The end plate 22 has centrally located thereon anupstanding boss 25 anda depending boss 26 preferably in alignment therewith. The boss 25 has abore 21 formed therein and in the interior of this bore is formed a boss28 having a sump bore 29 formed therein. At the upper end the bore 21 iscounterbored to accommodate the outer race of a ball bearing 30,said'counterbore forming a shoulder against which the bottom end of theouter race may rest as the top end is flush with the upper end of theboss 25.

such hand (right hand or left hand) that when the shaft 3| is rotatingin its operative direction, oil, in the lower portion of the casing andwithin the bore 21, is forced up the hole in the shaft and is deliveredto points which will be presently described.

An opening 35 formed in the boss 25 as shown,

permits the lubricant to pass from the bottom of the casing into theb0re21.

Mounted on the portion 32 of the shaft is a sleeve 31, the upper end ofwhich abuts the shoulder 38 formed on the shaft 3|, and the lower end ofwhich abuts a spring ring 39 formed near the lower end of the shaftportion 32. This sleeve is preferably keyed to the shaft portion 32, andformed in the sleeve and .the portion 32 are matched holes or passages40, 4|, and 42. The passages 40 and 4| are radial, and the passage 42 isdiametrical, and these passages are provided for delivering lubricantfrom the hole or passage 35 previously described. The upper end of thesleeve 31 is stepped to accommodate the inner race of the ball bearingl1 and a ring member 43, the latter of which rests on a shoulder 44formed on the sleeve 31. A spring retaining ring 45 has its innerperiphery engaging a groove formed in the sleeve 31, near the upper endthereof, and the web of the spring ring overlies the member of the ballbearing carrying the inner race. The lower end of the sleeve 31 is alsoof reduced diameter and a shoulder is formed at 45. An annular ring 41engages the shoulder 48 and also engages the member carrying the innerrace of the ball bearing 30. Below this member is a spring ring 52 whichengages said member and has its inner periphery engaging a groove formedin the sleeve 31 adjacent to its lower end.

Mounted on the sleeve adjacent to the shoulder 44 is a needle bearing48, the race of which is between the ring member 43 and a spring ring49, the inner periphery of which engages a groove formed in the sleeve31. Spaced apart from the needle bearing 48 on the sleeve 31, is .asecond needle bearing 50. The lower end of the race of the needlebearing abuts the ring 41 and its upper end is engaged by a spring ring5|, the inner periphery of which engages a groove formed in the sleeve31 in spaced relation to the groove engaged by the spring ring 49.

Embracing the boss 28, and extending upwardly to a point adjacent to thelower surface of the ball bearing 30, is a screen 53 which serves tostrain all of the oil delivered to the bore 35 in the shaft.

Now referring to Figure 3, the needle bearings 48 and 58 support afiller block or camming member generally designated by the numeral 54,and shown in perspective in Figure 6. The interior bore of this cammingmember forms the outer races for the needle bearings 48 and 58.

The camming member 54 is slotted at 55 to accommodate a roller 51, thepurpose of which 'will be presently described. The slot 56 terminates,as can be seen in Figure 3, in a curved wall 58 adjacent to the normaloperating position of the roller 51. On the other hand, the slot 56terminates in a curved wall 59. The camming member 54 also has aplurality of longitudinal holes 60 formed therein parallel to the axisof the bore 55 in order to lighten the rotating structure. Above theslotted portion 56, carrying the roller 51, is a solid portion 6|, whichas may be seen in Figure 2, forms the inner race .of a roller bearing62. Below the slot 56 is a solid portion 63 which cooperates to form theinner race of a roller bearing 64.

Within the body of the camming member 54, and extending through thesurface 58, is a plunger 65 which is reciprocally mounted in a hole 66formed in the camming member 54 and which is hollowed out to accommodatea spring 61 which urges the plunger into contact with the roller 51thereby tending to urge the latter into engagement with both the sleeve31, and into contact with the interior bore 68 of a scotch yoke member69, to be presently described. Above the roller 51 the bore 68 forms theouter race of the roller bearing 62, and below the roller 51 the bore 68forms the outer race of the needle bearing 64.

The member 69 is in the form of a square block with beveled corners 18,and the bore 68 above referred to is concentric with the .center of thesquare. The length of the member 69 is substantially the same as that ofthe length of the camming member 54. In order to retain the rollerbearing 62 therein, spring rings 1|, the outer peripheries of whichengage grooves formed in the bore 58, are provided at each end of theroller bearing. Likewise spring rings 12 at each end of the rollerbearing 64 engage similar grooves formed in the bore 68.

Engaging the flat surfaces 69a, 89b of the member 55 are machined pads13 and 14 respectively formed in a yoke member 15. The opening formed inthe yoke member is rectangular to permit the yoke member to movelaterally therein as shown in Figure 3. In other words, vertically thespace between the pads 13. and 14 is the same as the distance acrossflats of the square, while the distance horizontally or laterally, asseen in Figure 3, is greater than the distance across flats by thelength of the stroke (eccentricity of the path of movement of thesquare), plus sufficient clearance. Formed integral with the yoke 15 is.a rod 15 preferably centrally disposed with respect to the lateralsides of the yoke. The yoke also carries oppositely disposed to the rod16, a second rod 11. The yoke '18 has sides 19 and 8.8 whichrespectively carry pads 8| and 82, which form a working fit with thevertical sides of the member 69. The yoke 18 also has sides 83 and 84which are spaced apart from one another a distance equal to the distanceacross the square sides of the member 69, plus the stroke of theepicyclic movement, plus sufficient clearance.

Preferably formed integral with the side 19, of the yoke 18, is a rod85. This rod preferably r lies on a horizontal center line extendingthrough the yoke 18. The side 80, of the yoke 18, also has preferablyformed integral therewith a rod .85 in alignment with the rod 85.

Mounted on the boss I2 is a cylinder member 81 having a tubular portion88 extending through the bore |2a. The cylinder member 81 has aninterior bore 89 and a counter bore 90. The bore 89 forms clearance forthe pistonQl, and within the space between the counter bore 90 and thepiston 9| is a series of packing rings 92. These packing rings aresecured in the cylinder by means of a spring ring 93, the outerperiphery of which engages a groove formed in the wall of the counterbore 98. The cylinder member 81 includes a 10wer horizontal flange 94,an upper horizontal flange 95, and a vertical flange portion 98whichabuts .the outer face of the boss 12. The cylinder member 81 is securedto the boss |2 by means of four filister head cap screws 9 as y be seenin Fi ure l der of the member 98. counterbore I 08 is a spring member II0, the lower Z Returning to Figure 3, a cylinder member 98 is mountedon the boss I3, and has a tubular portion IOI which extends through theradial bore I3a'formed in the boss I3. The Cylinder mem- The cylindermember 98 also (referring now to Figure 2) has a counter bore I03which'accommodates a series of packing rings I04, said series beingretained in the counter bore I03 by means of a spring ring I05, theouter periphery of which engages a groove formed in said bore. Amid thepacking rings I04 is a lantern ring I06, to be presently described. Allof the cylinder members are identical, and although the followingdetails are included in all of them, these details may only be seen inFigure 2, of the drawings. A hole I01, extending vertically downward,and communicating with the cylinder bore I02 is counterbored at I08, andthe shoulder formed between the counterbore I08 and the bore I 01 formsa seat for a valve member I 09. This valve member forms the dischargevalve for the cylin- Positioned within the end of which abuts the valvemember I09, and the upper end of which is in contact with the lower endof n intermediate member III for leading the discharge fluid from thecylinder to the discharge manifold H2. The latter includes an annularfluid passage II 3, with branch pas- 'sages', such as the one shown at II 40., for communicating with the interiors of the tubular members, suchas the member III.

surface of the plate III forms a seat for a valve member II9. A springI20 has its leading end engaging the upper surface of the valve H9, and

its upper end bottoms in the counterbore II6, thereby urging the valveII9 downwardly on its seat. This valve forms the inlet valve for thecylinder. Secured to the cylinder member 98, and the plate H1, is amanifold I2I. This manifold has an annular passage I22 formed therein,and a cross passage I23 formed therein communicates with the passageI22, and with the hole H8. The manifold I I2,-and the intermediatemember III are secured to the cylinder member 98 b means of hexagon headcap screws I24, as may be seen in Figures 1, 2, and 3. Likewise, themanifold I 2I and the valve III are secured to the lower portion of thecylinder member 98 by means of filister head screws (not shown extendingupwardly from the bottom of the device) 'be secured in fluid tightrelation to the shoulders abutting the ends thereof. Between the pistonhead I29 and the rod 86 packing I30 may be provided for perfecting afluid tight seal. As the yoke member I8 is moved on a horizontal path bymeans of m improved epicyclic movement, the piston is reciprocated inthe cylinder bore I02. Whenever it moves toward the left, as seen inFigure 2, the suction created allows the valve II9 to lift so thatwater, for example,

may enter this cylinder. As soon as the piston starts moving t theright, as seen in Figure 2, the pressure created, abetted by the urge ofthe spring I20, seats the valve H9, and as the pressure builds up in thecylinder, the valve I 09 is displaced against the urge of its spring H0,and thereby fluid (water) discharged from the cylinder may pass via saidlast mentioned valve, a passage H4 in said intermediate member, andthence to the passage I I3 in the manifold 2.-

When the piston is moving on its suction stroke, which is toward theleft, as seen in Figure 2, the discharge valve I09 is held on its seat'under the urge of the spring H0, and the partial vacuum created in thecylinder causes fluid from the manifold I22 to flow via passages "I23and H8, and to lift the valve II9 off of its seat against the urge ofthe spring I20. The fluid then passes via the inlet port H5, and intothe cylinder, filling the same as the stroke to the left progresses. Nowas the piston starts moving to the right again, the dischare actiondescribed above is repeated. A cylinder member 99, like the cylindermembers 81 and 98, is mounted on the boss I4, and the fourth cylinderI00, is mounted on the boss I5.

The rod 85 oppositely disposed with respect to the rod86, 0n the yokeI8, is formed into a piston in the same manner as described for the rod86, and as the yoke I8 is reciprocated due to the epicyclic movement inthe block '69, the pistons on the rods 85 and 86 move in unison so thatwhen the piston on the rod 86 is on a discharge stroke, the pistonon'the rod 85 is on a suction stroke.

The rod I6, on the yoke I5, has its piston 9I constructed in the samemanner as the one described on the rod 86, and likewise a similar pistonis carried on the rod 71. The pistons on the rods I6 and I1 likewisemove in unison as the block 69 reciprocates so that when the piston onthe rod I6 is making a suction stroke, the piston on the rod 11 ismaking a discharge stroke. Passages in the intermediate member I I I,like the passage H4, and passages in the manifold II2 (like the passagell4a), lead from each of the cylinders 81, 99, and I00, and communicatewith the passage H3 in the manifold H2 in the same manner as shown inFigure 2. Between the passage I22 in the inlet manifold I2I, and all ofthe cylinders, are passages such as I23 and I I8, shown and described inconnection with the cylinder 98-.

As the shaft 3| (Figure 3) rotates in a clockwise direction, the sleeve31, which is keyed thereto, also rotates in a clockwise direction, andthe roller 51, which is urged into engagement therewith by the springloaded plunger 65, rolls in a counter-clockwise direction around thesurface 68. As the roller rolls around this surface it is constantlyinterposing itself between the outer surface of the sleeve 31, and thesurface 68, thereby causing the'block 69, which carries the bore 68, tomove with an epicyclic movement. The block 69 drives both the yoke "I5and the yoke 18 as scotch yokes.

When the device is operating, the thread 29 on the lower end of theshaft urges oil downwardly between itself and the wall of the'passage34. The oil then passes through the hole 35 and is delivered to theworking parts via the branch passages 40, 4I, and 42. The screen','orstrainer, 53, is positioned between the passage 36 and the threadedimpeller screw 29, "and therefore the oil is strained repetitively sothat no unstrained oil may be delivered to the impeller screw 29. The

tric motor.

I22 of said manifold via -a cross passage'ISI.

.this fitting may be led to the point of use.

pistons receive oil discharged centrifugally from the cross-hole 42. Aplug I 3I has threads. I32

engaging a threaded hole I33 at the bottom of the sump 21. A boss I34for-med on the casing I0,

has a hole formed therein communicating with the interior of the casing,and mounted in this hole is a filler tube I35 carrying a screw cap I36.

The oil may be drained from the interior of the casing by removing thedrain plug I3I, and this may be replaced and fresh oil added to thecrank Although the shaft 3| may be driven in any suitable manner, Iprefer to drive it with an elec- The upper end of the shaft may have aturned down portion I31 formed thereon providing' a shoulder I38, and anelectric rotor I39 may be pressed on the reduced portion I31.and

the open end of the tubular member I43, and a portion I49 bears againstthe end thereof. Bolts I50, passing through the bosses I41 engagethreaded holes in bosses I5I formed in the upper .portion of the casingI0, and thereby secure the stator and the tubular member I43 onto thecasing I0. An annular space I52 appears between the rim I46a of the domeandthe upper end of the tubular member I43 (eXcept where the bosses I41appear), and thereby a space for air circulation is provided. A vent I53formed in the upper end of the casing I0 is provided for excess oil todrain from the motor housing.

The lantern ring I06 positioned intermediate the packing rings abovereferred to is provided to prevent any water, which leaks past thepistons, 7

from entering the interior of the casing I0, and likewise prevents anyoil which leaks past the pistons and is possibly co-mingled with thewater from entering the interior of the chamber Apassage I54, formed inthe cylinder 98.

I0. communicates with the lantern ring and with a cross passage I55, andthe latter in turn communicates with a groove I56 formed inthe boss I3.The left end of the passage I54 is provided with a plug I51 so that nooil or water can pass into the interior of th casing I0, and thereforeit must flow into the passage I55 and thence downwardl through thegroove I56 to the ex.- terior.

A fitting I58 secured to the intake manifold I 2i by means of screws I59has a passage I60 formed therein which communicates withthe interior Asimilar fitting I62, mounted on the manifold I12, communicates with thepassage H3 therein, and The device herein shown and described is anautomobile washer, and water under pressure from the outlet I62 is usedfor this purpose. Y

It will be noted that if the shaft 3I is rotated in the wrong direction,for example, in a counterclockwise direction, as viewed in Figure 3, theroller 51 is urged in a clockwise direction, and the roller reactsagainst the spring loaded plung er and tends to move to a point wher thespace between-the shaft and thesurface 68 is greater than the diameterof the roller with the result that the epicyclic movement will notope-r}- ate unless driven by a shaft rotating in a clockwise direction..If the reverse were required, 0bviously the member 54 could bewithdrawn, turned endfor end, and replaced, thereby setting the deviceup to operate in the opposite direction.

However, in either event, the device is arranged so that it will onlyoperate in one direction, not

in both- I In the arrangement shownin Figures-4 and 5, a shaft I63 has arace portion I64 formed thereon. On the shaft,- to one side of the raceI64, is

.a roller bearing I65, and a second roller bearing I66'is positioned onshaft I63 tothe other side of the race I64.- A filler block or cammingmember I61 has a bore I68 which forms theouter race for the bearingsI65, I66. The filler block has a hollowed-out portion I69 to clear aroller IN. This roller is urged into rolling contact with the race I64,and into contact with thebore I1I formed in a yoke member I12. Betweenthe exterior surfaces of the filler block I61, on either side of theroller I10, are roller bearings I13and I14. The exterior surface of thefiller block I61 form the inner races of the bearings I13 and I14, andthe interior bore I1'I forms the outer races of these bearings. I

A disc-like member I15 is securedto the left end of the filler block I61, as seen in Figure 5, and this disc-like member overlaps the left endof the yoke memberv I12. Formed integral with the disc-like memberI'E5'is a counter-balancing weight I16. A second disc-like .mem-ber I1!-is secured to the right end. of the .filler block I61, and it likewisehas formed integraltherewith a counter-balancing weight I18. Thesedisc-like members are secured to the filler block by means of cap screwsI19, and the weights I16 and I18 are positioned somewhat opposite to.the cut-out portion carrying the roller I10. Projecting from the curvedwall I80, of the cavity I69, is a plunger I8I mounted in a hole I82formed in the filler block I61, and a spring I83 also mounted in saidhole, urges the plunger I into engagement with the roller I10 with theresult that the roller I10 is in turn urged into rolling engagement withthe race I64 and the bore I1 I. The yoke I12 may have formed integraltherewith a connecting arm I84, the outer end of which may carryasuitable bearing I85. Th yoke mayalso carry a plurality of pairs ofspaced lugs I86 which may be best seen in Figure 5. These lugs have across hole I81 formed therein to accommodate a wrist pin I88, whichpasses through a bearing formed in .a connecting rod I89. The wrist pinis pushed through one of the lugs and then through the bearing instantially no vibration.

In the form of the invention shown in Figure 2, the weight of the filler:blockor camming member 54 1s carried by the roller 51, and the rollermember is supported in the member 69 by means of aspring ring 5I snappedinto a groove formed in the sleeve member 31. The member 69 is supportedon the roller 51 by-means of the lower spring ring 1 I, and the rollerin turn is supported on the shaft (sleeve 31 which is secured to. theshaft) by means of the spring ring ,5 I

-In the modification shownin-Figures '7 and 8,

9 the roller is provided with an annular flange which engagescorresponding grooves formed in theinner race and in the outer race.Referring to said figures, a shaft 23I correspondingto the shaft 3| inFigure 2, is provided with a ball bearing 211 mounted in a bore 2l5formed in a boss 215 on the end plate 2 I4. The ball bearing is retainedin the bore M6 by means of a spring ring 218 snapped into a grooveformed in the bore 2 l 6. The shaft 23I is also supported near its lowerend on a ball bearing 230, the outer race of which fits a bore formed inthe boss 225 and rests on a shoulder formed in said boss. The inner raceof the ball bearing 230 is retained on the shaft by meansof a springring 252 snapped into a groove in theshaft. A roller bearing 248 and. aroller bearing 250 spaced apart therefrom are retained on the shaft23Iby spring rings 249, 25!, I99 and 198.. The shaft 23l also has agroove l91formed therein.

The filler block or camming member 269 has a bore 255 which cooperateswith and forms outer races for the roller bearings 248 and 250. A slotI96 is formed in the camming member 269 intermediate the ends thereofand extends from the periphery to the center line as shown in Figure 8,thereby leaving semi-circular sections 26! and 263 between which theroller 251 is positioned.

A scotch yoke member 210 has an internal bore 21l which has a groove 212formed intermediate the ends thereof. This groove is in alignment withthe groove I91 and both said grooves are engaged by an annular flange213 formed on the roller 251.

-The bore 21I forms an outer race for roller bearings 214 and 215. Theouter surface of the filler block and camming member cooperates withthese bearings to form inner races. The roller bearing 214 is retainedin the bore 21I by means of' spring rings 216 and 211 which are snappedinto grooves formed in the yoke member 210. Likewise the bearing 215 isretained therein by means of spring rings 218 and 219 snapped intocorresponding grooves formed in the yoke member 210. The yoke member 210is provided with opposite flat surfaces 280 and 28!, which cooperatewith the surfaces 282 and 283 respectively of a yoke 284, which issimilar to the yoke shown in Figure 3.

V The member 210 also has opposed flat surfaces which cooperate withsurfaces 285 and 286 formed in the yoke member 281.

, The end plate 222 has centrally located thereon an upstanding boss 225and a depending boss 226 inalignment therewith. The boss 225 has -a bore221 formed therein and in the interior of this bore is formed a boss 228having a sump bore 229 formed therein. At the upper end of the bore 221is a ball bearing 230 mounted in a counter bore.

The shaft 23! has a lower end 233 of reduced diameter and which isapproximately one to two thousandths of an inch smaller in diameter thanthe diameter of the bore 229. Theportion 233 also has threads 234 formedthereon. A central hole 235 is formed in the shaft and extends upwardlytherein to a point adjacent the ball bearing 2I1. The threads 234 areformed of such hand (right or left hand) that when the shaft 23! isrotating in its. operative direction, oil, in' thelowerportion of thecasing and within the bore 221, is forced up the hole, 235 'in theshaft; and is delivered to points which will presently be described.

An opening 236 formed in the boss 225 as shown permits the lubricant topass from the bottom of the casing into the bore 221. A diametricalpassage 242 extends throughthe shaft 23 and communicates with thevertical hole 235 in the shaft, so, that when oil is forced up thepassage 235 it passes out of both ends of the passage242 and lubricatesthe needle bearings, the roller, the camming membenthe member 215, andthe yoke members 284 and 281. If desired, I may form additional passagessuch as the passage 24| to individually lubricate the inner needlebearings.

Embracing the boss 22B and extendingup wardly to a point adjacent to thelower surface of the ball bearing 230 isa screen 253 which serves tostrain all of the oil delivered to the bore 235 in the shaft.

A plug I3Ia has threads I32a engaging a threaded hole 133a at the bottomof the sump 221, and to drain the oil from the interior, of the casingthe plug I3la, which is of such length that it extends beyond theperimeter of the casing, may be removed.

Although I have herein shown and described by way of example oneembodiment of the invention, and modifications thereof, it is obviousthat many changes may be made in the arrangements herein shown anddescribed without departing from the spirit of the invention as setforth in the following claims:

What is claimed is:

1. In an epicyclic drive, a rotatable shaft, an inner race on saidshaft, a member adapted to be gyrated, said member including an inwardlyfacing outer race, a roller member between said races, a filler blockbetween said races and having its outer surface parallel to said outerrace and its inner surface parallel to said inner race, a cavity formedin said filler block to.clear said roller, and spring loaded meanscarried on said filler block and urging said roller member into rollingengagement with said races.

2. In an epicyclic drive, a rotatable shaft, an inner race on saidshaft, a member adapted to be gyrated at less strokes per minute thanthe number of revolutions of said shaft, said member having an interiorbore formed therein at least a portion of which constitutes an outerrace, a roller member between said races, a filler block between saidraces and having a cavity formed therein clearing said roller member,said filler block having its outer surface parallel to said outer raceand having an eccentric hole formed therein the inner surface ofwhich-is parallel to said inner race, and spring loaded means carried.

in said filler block and extending through a wall of said cavity toengage and urge said roller member into rolling engagement with saidvraces. 3. In an epicyclic drive, a rotatable shaft carrying an outwardlyfacing inner race, a hollow member having an interior bore at least aportion of which forms an inwardly facing outer race, a single rollerbetween said races, tubular eccentric means between and engaging bothsaid shaft and said member for holding said races in eccentric relationto one anothen said tubular eccentric means having a portionintermediate the ends thereof removed to clear said roller and springmeans carried by said last mentioned means and engaging said roller forurging the same into rolling contact with both said races.

, 4. In an epicyclic drive, a rotatable shaft carrying an outwardlyfacing inner race, a hollow member having an interior bore a portion ofwhich forms an inwardly facing outer race, a single roller between saidraces, a filler block between said shaft and said member having anexternal bearing surface facing said bore and hav-. ing an interiorbearing surface eccentric to said bearing surface and facing said shaft,said filler block also having a portion cut away to form a clearance forsaid roller, and spring loaded means mounted in said filler block andperipherally engaging said roller for urging the latter into rollingcontact with both said races.

5. In an epicyclic drive, a rotatable shaft carrying an outwardly facinginner race, a hollow member having an interior bore forming an inwardlyfacing outer race, said hollow member having at least twooppositelydisposed flat surfaces, -a single rollerbetween and adapted to rollinglyengage said races, a filler block between said shaft and said memberhaving an external bearing surface facing said bore, and having aninterior surface eccentric to said bearing surface and facing saidshaft, said filler block also having a cut-away portion clearing saidroller, fric tionless bearing means between said shaft and said interiorbearing surface, other frictionless bearing means between said externalbearing surface and said bore, and spring loaded means mounted in saidfiller block and peripherally engaging said roller for urging the latterinto rolling contact with both said races.

6. In an epicyclic drive, a support, a rotatable shaft journaled in saidsupport, an outwardly facing inner race surface-carried by said shaft, ahollow member having an interior bore forming an inwardly facing outerrace surface, a filler block member having a second outwardly facinginner race surface smaller in diameter than the diameter of said firstouter race surface and a second inwardly facing outer race surfaceeccentric to said second inner race surface, facing and spaced apartfrom saidfirst outwardly facing inner race surface carried by saidshaft, said race surfaces being conjointly engaged by antifriction meansfor maintaining predetermined fixed relations between said shaft, saidhollow member, and said filler block, a single roller rollingly'engaging said first mentioned outwardly facing inner race and saidinterior bore for transmitting motion from said shaft to said hollowmember, a clearance cavity for-medin tric to said second inner racesurface, facing and,

spaced apart from said first outwardly facing inner race surface carriedby said shaft, frictionless bearing means cooperating with at leastportions of said race surfaces for maintaining predetermined fixedrelations between said shaft, said hollow member, and said filler block,said bearing means lying within and adjacent to the ends of said hollowmember, roller means in roll ing-engagement with said first mentionedoutwardly facing inner raceand said-first mentioned inwardly facingouterrace surfaces for transmitting motion from said shaft to saidhollow member, a clearanc'e cavity formed in said filler block andextending inwardly from the outer surface thereof to cleansaid rollermeans, and spring means carried by said fi ller block-for maintainingsaid roller means in said rolling engagement:

8. In an epicyclic drive, a support,a rotatableshaft journaled in saidsupport and-an outwardly facing inner race surface car r-ied bysaidshaft, a rectangular hollow member having-aninterifcr forming aninwardly facing outerrace surface; a filler block member having a secondoutwardly facing inner race surface smaller in diameterthan the diameterof said first outer race surface, and a second inwardly facingouter racesurface eccentric to said second inner race surface, facing and spacedapart from said first outwardly facinginnerrace surface carried by saidshaft, fric-= tionless bearing means cooperating with at leastportionsof saidracesurfaces for maintaining predetermined fixed relationsbetween said shaft,

said hollow member, and said filler block, said bearing means'lying'within and adjacent to the ends of'saidhollow member, roller means inrclling engagement with said firstmentioned outwardly facing inner raceand said firstmentioned inwardly facing outerrace surfaces fortransmitting motion from said shaft to said hollow memher, said rollermeans being positioned within a clearance cavity formed: in said fillerblock inter-- mediate the ends thereof, and spring'mean's carried bysaid filler block and constantly urging said roller means into saidrolling engagement;

9. The invention accordingto claim 5*, in which a yoke member havingoppositely disposed inwardly facing bearing surfaces engaging oppositefaces of said hollow member ismoved thereby as said shaft is rotated,and in which said yoke. mem ber carries oppositely disposedalignedpistons, the center lines of which lieon a plane equidi's-- tant fromsaid surfaces. Y

10. The invention according to claim 5, in which said fillerbl'ockcomprises a solid unitary structure having its-thicker portionintermediate the ends thereof cut away to forma cavity clearing saidroller, and in which said. spring loaded means is comprised of a springloaded plunger positioned in a hole in said member terminating in thewall on said cavity.

11. In anepicyclicdrive, a rotatable shaft car rying an outwardly facinginner race, a holl'ow member having aniinterior bore at leastaportion ofwhich forms an inwardly facing outer race, a single roller betweensaidraces, eccentric sleeve means having a clearance slot formed thereinat right angles to-the axis thereof and extending inwardly from thepoint of greatest eccentricity and communicating with the interior ofsaid sleeve means betweensaid-shaft and said-member for holding saidraces in eccentric relation toone another, said roller being positionedwithin said clearance slot, spring means carried-by-said eccentricsleeve means and engaging said roller for urging the same intorollingcontact withbothsaid races, and counter-balancing members se--cured to said last mentioned} means and including weights disposedopposite said roller to counterbalance said drive. 1 a w 12. In anepicyclic drive, a rotatable shaft carrying an outwardly facing innerrace; a hollowmember having an-inte'rior; bore' a -pcrtion offwhichforms-an inwardly facing outer race, a single roller between saidraces,a-filler' blocli be tween' said shaft and said memberflhayinganexternal bearing surface facing saicl bore --and having an interiorbearing surface eccentric, to said bearing surface and facing saidshaft, said' filler block also having a portion cut away to form aclearance for said roller, spring loaded means mounted in said fillerblock and peripherally engaging said roller for urging the latter intorolling contact with both said races, said hollow member being tubularin form, a rigid arm having one end formed integral with said hollowmember and carrying a wrist pin bearing on its other end, and lugsangularly disposed on said hollow member and adapted to be connected toobjects to be moved thereby.

13. The invention according to claim 5, in which said hollow member istubular in form and having a rigid arm formed integral therewith, and inwhich spaced pairs of lugs are angularly disposed about the periphery ofsaid member.

14. The invention according to claim 5, in which said filler block is afew thousandths of an inch longer than said member to provide clearancespaces between the ends of said hollow member and plate membersmentioned hereinafter, in which plate members having clearance holes forsaid shaft are secured to said filler block, said plate members havingportions on the opposite side of the shaft from said rolling member,thickened portions constituting counter-weights.

15. In an epicyclic drive, a rotatable shaft carrying an outwardlyfacing inner race, a hollow member to be gyrated and having an interiorbore at least a portion of which forms an inwardly facing outer race, asingle roller between said races, eccentric sleeve means between saidshaft and said member for holding said races in eccentric relation toone another, said sleeve means having a clearance cavity formed thereinto accommodate said roller, and spring means carried by said sleevemeans and acting against said roller for urging the same into rollingcontact with both said races.

16. In an epicyclic drive, a rotatable shaft carrying an outwardlyfacing inner race, a hollow member having an interior bore at least aportion of which forms an inwardly facing outer race,

a single roller between said races, eccentric tubular means between saidshaft and said member for holding said races in eccentric relation toone another, a clearance cavity formed in said tubular means to containsaid roller, and counterbalancing members secured to said last mentionedmeans and including weights disposed opposite said roller tocounter-balance said drive.

17. In an epicyclic drive, a rotatable shaft carrying an outwardlyfacing inner race, a hollow member having an interior bore at least aportion of which forms an inwardly facing outer race, a single rollerbetween said races, eccentric tubular means between said shaft and saidmem her for maintaining said races in eccentric relation to one another,said tubular means having a clearance space formed therein to clear saidroller and extending from the side wall thereof of greatest eccentricitytoward and communicating with the interior thereof, spring loaded meanscarried by said eccentric tubular means and engaging and urging saidroller into rolling contact with both said races, and counter-balancingmembers secured to said last mentioned means and including weightsdisposed opposite said roller to counter-balance said drive.

LINDSAY H. BROWNE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,029,075 Lockwood June 11, 19121,056,746 Pitts Mar. 14, 1913 1,557,193 Buvinger et a1 Oct. 13, 19251,568,290 Morison Jan. 5, 1926 1,634,507 Morison July 5, 1927 1,863,667Miranda June 21, 1932 1,867,981 Mudd July 19, 1932 1,868,498 Gruman July26, 1932 2,164,294 Maham June 27, 1939

